Friedman E R
Percept Mot Skills. 1977 Dec;45(3 Pt 1):715-20. doi: 10.2466/pms.1977.45.3.715.
22 preschool children were either trained (experimental group) or not trained (control group) to indicate a 15-sec. time interval by the method of production. The accuracy was significantly improved by brief training. The children were generally accurate whether attending to the stopwatch at the right or left ear or given sound- or light-filled intervals. Neither age nor sex differences were found. These results demonstrate the possibility of conducting research on time-estimation at an early age if the procedures are relatively short and of interest to the young child. Because most of the children were unable to count as a guide to their judgments, the inner neural clock theory is supported.
22名学龄前儿童被分为两组，一组接受训练（实验组），另一组不接受训练（对照组），通过生成法来指示15秒的时间间隔。短暂的训练显著提高了准确性。无论孩子是注意右耳还是左耳的秒表，或者是接受有声音或有光线的时间间隔，他们总体上都很准确。未发现年龄和性别差异。这些结果表明，如果程序相对较短且对幼儿有吸引力，那么在幼儿期进行时间估计研究是可能的。由于大多数孩子无法通过数数来辅助判断，因此内部神经时钟理论得到了支持。
